I need some help. I didn't think I was that incompetent, but I prove myself wrong every day. Today's challenge. I want to manually turn over my chevy 350 but I can't get a socket over the crankshaft bolt. I tried every socket I had. The other bolts are 9/16 and look to be the same size as crankshaft bolt. I went to Napa and bought thinner walled socket, but It won't fit either. Do I need a special tool???